问题
解答题
2000-1+999×111×9.
答案
2000-1+999×111×9
=2000-1+999×(111×9),
=2000-1+(1000-1)×999,
=2000-1+1000×999-999×1,
=2000+999000-(1+999),
=2000+999000-1000,
=1000000.
2000-1+999×111×9.
2000-1+999×111×9
=2000-1+999×(111×9),
=2000-1+(1000-1)×999,
=2000-1+1000×999-999×1,
=2000+999000-(1+999),
=2000+999000-1000,
=1000000.